diff --git a/xvaga/agasys.cpp b/xvaga/agasys.cpp
index b605e760c..bda8e25c9 100755
--- a/xvaga/agasys.cpp
+++ b/xvaga/agasys.cpp
@@ -2,7 +2,7 @@
 
 #ifdef LINUX
 #include "xvt_type.h"
-#include "../include/incstr.h"
+#include "incstr.h"
 #else
 #include <fstream.h>
 #endif
diff --git a/xvaga/xvt.h b/xvaga/xvt.h
index 196bd5b1d..816242edb 100755
--- a/xvaga/xvt.h
+++ b/xvaga/xvt.h
@@ -273,6 +273,8 @@ XVTDLL int     xvt_str_compare_ignoring_case (const char* s1, const char* s2);
 XVTDLL char*   xvt_str_duplicate(const char* str);
 XVTDLL BOOLEAN xvt_str_match(const char* str, const char* pat, BOOLEAN case_sensitive);
 XVTDLL double  xvt_str_fuzzy_compare (const char* s1, const char* s2);
+XVTDLL void xvt_str_make_upper(const char* str);
+XVTDLL void xvt_str_make_lower(const char* str);
 
 // System calls by XVAGA
 XVTDLL void     xvt_sys_beep(int severity);